Thanks...I haven't tried anything else yet because, well, I think I've tried just about all I could think of, searched quite a bit online, and thought I'd raise the question here to see if any other suggestions might be out there. I had to reinstall the cert a few times because initially it wouldn't accept the password I had set on it (even though I knew 100% I was typing it correctly on my phone), but then come to find out that I exported the certificates from my work PC incorrectly. After correctly exporting the certs, it did take the password and then they seemed to install correctly. I went to make sure the different options were turned on after installing the certs. But it still keeps saying a certificate is not installed if I try to decrypt an encrypted message.
Here's the real kicker...I am one of the company's "IT guys." LOL. Guess I shouldn't say that too loud huh?
I did go to our network security admin who actually issues the email certs and he said we don't officially support Android devices, they can assist on iPhones (he's a Mac guy), and the only suggestion he had for Android was to download Touchdown and tie my corporate email to that.
But of course I'm stubborn and want to use the native email app on the phone.
Yes, my S6 is all up to date with a stock build, no custom ROM. I've even checked with our help desk crew since they typically assist end users with this stuff. None of them have been able to get it working either, and the one rep said she tried on her phone before and got exactly what I'm getting.
Thank you so far!